ASoC: pxa: remove mach header dependency

As we are moving the mmp platform towards multiplatform support,
we have to stop including platform header files.

This changes the pxa-ssp sound driver file to no longer depend
on mach/hardware.h and mach/dma.h. The code using the definitions
from those headers is actually gone already, the only thing
that was still being used was the pxa_dma_desc typedef, which
we can easily work around by using the normal 'struct pxa_dma_desc'
name.

The pxa2xx-dma driver still uses this header, so we include it
explicitly there, which is ok because that is only used on pxa,
not on mmp.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Xia Kaixu <kaixu.xia@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>

sound/arm/pxa2xx-pcm.c

@@ -14,6 +14,8 @@
 #include <linux/dma-mapping.h>
 #include <linux/dmaengine.h>
 
+#include <mach/dma.h>
+
 #include <sound/core.h>
 #include <sound/pxa2xx-lib.h>
 #include <sound/dmaengine_pcm.h>

sound/arm/pxa2xx-pcm.h

@@ -9,12 +9,11 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
-#include <mach/dma.h>
 
 struct pxa2xx_runtime_data {
 	int dma_ch;
 	struct snd_dmaengine_dai_dma_data *params;
-	pxa_dma_desc *dma_desc_array;
+	struct pxa_dma_desc *dma_desc_array;
 	dma_addr_t dma_desc_array_phys;
 };